3 WLAN Mode
3.2 Channel Power Measurement
3.2.7.2 Settings
The controls on this tab include the Marker active function and a radio button
selection of the marker control mode (Normal, Delta, or Off) for the selected marker,
as well as additional functions that help you use markers.
Marker Frequency
Sets the marker X Axis value in the current marker X Axis Scale unit. It has no effect
if the control mode is Off, but is the SCPI equivalent of entering an X value if the
control mode is Normal or Delta.
Remote
Command
:CALCulate:CHPower:MARKer[1]|2|…|12:X <freq>
:CALCulate:CHPower:MARKer[1]|2|…|12:X?
Example
:CALC:CHP:MARK3:X 0
:CALC:CHP:MARK3:X?
Notes If no suffix is sent, uses the fundamental units for the current marker X Axis Scale. If a suffix is sent that
does not match the current marker X Axis Scale unit, an error “Invalid suffix” is generated
The query returns the marker’s absolute X Axis value if the control mode is Normal, or the offset from
the marker’s reference marker if the control mode is Delta. The query is returned in the fundamental
units for the current marker X Axis scale: Hz for Frequency and Inverse Time, seconds for Period and
Time
Preset After a preset, all markers are turned OFF, so Marker X-Axis Value query returns Not A Number (NAN)
State Saved Saved in instrument state
Min/Max –/+9.9E+37
Annotation Mkr # <X value> and <Marker value> upper right on graph
Marker X Axis Position (Remote Command Only)
Sets the marker X-Axis Scale position in trace points. This setting has no effect if the
control mode is Off, but is the SCPI equivalent of entering a value if the control
mode is Normal or Delta, except in trace points rather than X-Axis Scale units. The
entered value is immediately translated into the current X-Axis Scale units for
setting the value of the marker.
Remote
Command
:CALCulate:CHPower:MARKer[1]|2|…|12:X:POSition <real>
:CALCulate:CHPower:MARKer[1]|2|…|12:X:POSition?
Example
:CALC:CHP:MARK10:X:POS 0
:CALC:CHP:MARK10:X:POS?
Notes The query returns the marker’s absolute X-Axis value in trace points if the control mode is Normal, or
the offset from the marker’s reference marker in trace points if the control mode is Delta. The value is
returned as a real number, not an integer, corresponding to the translation from X-Axis Scale units to
WLAN Mode User's &Programmer's Reference 264
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